Machine for forming and securing solder to metal caps.



No. 816,943. PATENTED APR. 3. 1906.

F. W. SCHULTZ. MACHINE FOR FORMING AND SECURING SOLDER TO METAL CAPS.

APPLICATION FILED SEPT-T1905.

3 SHEETS-SHEET 1.

No. 816,943. PATENTED APR. 3,1906. 7 1-". W. SCHULTZ.

MACHINE FOR FORMING AND SECURING SO LDER TU METAL CAPS. APPLICATIONFILED SEPT. 7. 1905.

3 SHEETS-SHEET 2.

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Witnaooza I 6M x v VaW3'C,

v i atmww' No; 816,943. I PATENTED APR. 8, 1906.

; F. W. SCHULTZ.

MACHINE FOR FORMING AND SECURING SOLDER T0 METAL GAPS.

APPLICATION FILED SEPT- 7, 1905.

3 SHEETSSHEET 3.

Unis fs'ra rns PATENT onnron F REDERIGK \V. SCHULTZ, OF BALTIMORE,MARYLAND.

MACHINE FOR FDRMING AND SECURING SOLDEFtTO METAL CAPS.

Specificationof Letters Patent.

Patented April 3, 1906.

To all whom itmay concern:

Be it known that l, FREDERICK W. SCHULTZ, a citizen of the UnitedStates, residing at Baltimore, in the State of Maryland, have inventedcertain new and useful Improvements in Machines for Forming and SecuringSolder to Metal Caps, of which the following is a specification. i

This invention relates to amachine for formin a ring of solder andfusing the sands upon'tlie top surface and adjacent the rim ed e ofsheet-metal can-caps for the purpose of acilitating the soldering ofsuch caps upon cans. r The present invention relates more particularlyto devices for formin' wire-solder into the shape of a rin and p acingthe solder ring on the top sur ace of the can-cap. The mechanismemployed in fusing the solder rings to the caps is shown and describedin my pending application for another atent, Serial No. 259,551, whichwas filed ay 9, i905.

One object of the invention is to provide means by use of whichwire-solder may be produced in a ring form and of a size to suit thedparticular cap to which it is to be aplie i p Another object of theinvention is to rovide mechanism by which the wire-so der rings may beautomatically fed to and placed upon the top surface of the caps forattachment thereto. Another object of the invention is to provide acombination of mechanism whereby any number of can-caps may besuccessively supplied on their top surfaces wlth solder rings, whichbecome-attached to the cap by fusion. 7 z

With these and other ob ects in view the invention is illustrated in.the accompanying drawings, in which and solder ring attached. 1 r 1 Asthe greater part of the mechanism here Figure 1 illustrates a frontelevation of the machine embodying my invention, 2 illustrates a sideelevation of the same. ig. 3 illustrates a plan view of the same. Figs.

4', 5, 6, 7 and 8 illustrate'enlar e'd'details of the pendent mandrel onwhio the solder rm sol er ring; Fig. 10; j section of a can-cap shown isa duplication of the devices trated and clalmed in my saidpendingapplieation, so much of the descriptive matter frame or table.

. The circular plate 6 is provi are formed. Fig.- Qis-a view of awireemployed in said application as is deemed necessary will be incorporatedbodily into thrilpresent specification.

eferring to the drawin 's by numerals, 1 designates a frame or table ofany suitable constructions and having a lower center crossbeam 2, onwhich a step-bearing 3 is secured. A vertical bearing 4 is also providedabove the step-bearing, and a center vertical shaft 5 has its lower endsustained in said stepbearing, while its upper end passes throu 'h thevertical bearing 4 to a point above t e At the up er end the verticalshaft carries a circular p ate 6, which is to have a step-by-steprevolution in a horizontal plane.

A horizontal driving-shaft 7 is mounted in bearings 8 at the front ofthe frame, and one end of this shaft carries a driving-pulley 9, whilethe other end of said shaft carries a crank-arm 10, which latter isprovided with a slot 11. A horizontal shaft 12 is sustained in suitablebrackets 13, and the inner end of this shaft carries a pinion 14, whichmeshes with a gear 15, mounted on the lower end of the vertical shaft 5.At the outer end the horizontal shaft 12 carries a ratchet-wheel 16, andthe extreme outer end of said shaft, at the side of said ratchet-wheel,is provided with an oscillating lever 17, the upper end of which carriesa .pawl 18, which engages the ratchet-wheel 16, while the lower end ofsaid lever is provided with a slot 19. A rod 20 has one end pivotallyconnected to the lower slotted ehd of the oscillating lever, while theother end of said rod is ivotally connected to the crank-arm 10. t willthus be seen that as the pulley 9 is revolved the shaft 7 and crank-arm10 will also revolve, while the rod 20. will impart, an oscillatingmovement to the lever 17 and cause the ratchet-wheel 16 to revolve theshaft 12 and pinion 14 intermittentlg Thus the gear 15, verticalsha'ftfi, an circular plate 6 will be revolved intermittently in ahorizontal lane.

tied with a plurality of holes or perforations 21, whichhave position ina circular path and adjacent the, outer or rim edge of'the circularplate. These holes are arranged at regular intervals apart, and in thepresent instance'there arafourteeii 'of them shnwn, although the numberis immaterial and hiay be more or less than'that Shawn Adjacent theholes or perforations the plate 6 is provided with a circular groove orchannel 22 for a purpose presently to be described. Each of the holes orperforations in the plate is provided with a disk 23, which latter are,secured by hinges 24, so that the disks may be raised or lowered overthe holes in. the plates. Each of these disks is provided with a centraldepression with a circular channel-groove 25 adjacent the edge, and thecentral portion of said depression is provided with a circular sheet ofsome suitable material 26, which is a poor conductor of hcatsuch, forexample, as. asbestos. Between the depressions and the outer rim edgeeach disk is provided with a plurality of perforations 27, so that thedisks may be hcatr d and cooled quickly. The depressions in the disksare or a size to receive a cap 28 of a sheet-mc tal can, the downturnedrim edge of which wll fit snugly in the channel-groove 25, while thecentral arched portion will bridge over the asbestos packing, which willprotect it from the heat and prevent scorching or discoloring the metal.

A bracket 31 is bolted to the topportion of the frame and extendsvertically at the side and slightly toward the rear of the circularplate 6, and the upper end of said bracket cX- tends inwardly over thesaid plate and sustains a chute 32, the lower end 33 of which terminates at a point adjacent the top surface of the circular plate. Theintermittent movements of the plate 6 are regulated so that at eachpause one of the perforations or holes 21 will have position directlybeneath the lower end 33 of the inclined chute, and during the pause ofthe plate the operator will place a cap 28 in the chute, and said capwill slide down and be discharged into the depression in the disk 23,and the rim edge of the cap will seat snugly in the chann el-groove 25,which forms a mold for the solder. After the cap has been deposited inthe depression of the disk 23, at the lower end of the chute, the tableis given a partial rotation, so as to present another disk beneath thechute, and the disk which has just received a cap will have positionbeneath the mechanism which forms and bracket 52, which latter carries abearing 53;

through which a shorthorizontal shaft 54 0X tends. The outer end of thisshort shaft carries a sproekct-wln-el 55, while the inner end of saidshaft carries a bevel-gear 56, as will clearly be seen in Figs. 1 and 3.A vertical shaft 57 is also sustained by the bracket 52, and the upperend of this vertical shaft carshaft through this chain.

inclined direction from the short horizontal shaft 54, which latterpasses through it down to the main driving-shaft 7, and the purpose ofthis bar is to steady the short shaft 54 and maintain it in a rigidposition and parallel with the driving-shaft. A sprocket-wheel 60 iscarried on the driving-shaft at the side of the bar 59, and asprocket-chain 61 passes around the said sprocket 60 and also around thesprocke t-wheel 55 on the short shaft 54, and this latter shaf t isdriven by the main The size of the sprockr t-whecls is such as to givethe vertical shaft 57 one revolution between the intermittent movementsof the table for a purpose presently to be described.

Depending beneath the rigid bracket 52 is a stationary bracket 62, thelower end of which is provided with two arms 68 and 64, which togetherform a U shape and curve concentrically about a pendent mandrel at thelower end of the vertical shaft 57. The diameter of the mandrel is equalto or slightly smaller than the cap that is to receive the solder ring,and this pendent mandrel turns between the said two arms 68 and 64 andis thereby prevented from vibrating while revolving. r

A blade 66 is secured in any desired manner to the vertical side of themandrel 65, and this blade is rigid with respect thereto. The upper endof the blade is provided with a if-shaped cutting-notch 67, which notchis formed at the inner side of the blade and adjacent the vertical wallof the mandrel 65. The upper end of the blade while making a revolutionwith the mandrel passes beneath the two arms 63 64. One arm 64 has atits end a beveled bottom surface 68, which comes at the side of themandrel 65 for a purpose presently to be set forth. At one side thebracket 52 carries a plate 69, and a grooved roller is'mountcd so as torevolve freely at the side of said plate. This grooved roller hasposition directly in front of the beveled arm 64 and is utilized toguide the wire-solder, as will presently appear. A bracket 71 is securedon top of the frame 1 and projects vertically above the table, and theupper end of the bracket carries a spool 72, on which the supply ofwire-solder 73 is wound and from which 1t 18 to be drawn and Woundaround the pendent mandrel 65. The strand of wire solder is passed fromthe spool beneath the.

grooved roller 76, then underneath the arm 64, and around the mandrel 65of the vertical shaft.

As the pendent mandrel revolves the wiresolder makes the first coil 74beneath the two I time 6364; Each succeeding coil winds above the lastone on the mandreland operatesto crowd. or ush down the coil wound nextbefore it. "l he second coil 75 is wound abovezthefirst coil 74,. and asthe third coil is beingwound theiirst or lowermost coil 74 will beforced downward on themandrel and on the V-notch 67' of the cutter-bladeand cut, and thereupon said lowest coil just cut will immediately dropfrom the pendent mandrel hecap that is seated on he mandrel. As soon asthis ringof "older has been thus depostialturn .7 k;W t k tor'eceiveatyire discharged from .to provide some d istrand 1 or coil on, as

ited the tabl tefi makes another parso that another cap and itionflieneath the mandrel When. one '1' i rie s f lished, as will be seen byg. by providing a space beotch'f and. thebottom surface of the thicknessof one and fisolder, so that before a ni'hemade through the first of thesecoiid coil 75 will nd', 1w en the first coil is combe be upletely-ciiti thesecond will be only half cut,

and as the edge-of the-V-cutter is embedded.

half-way; through'tliefsecondcoil the latter obviously cannot slip orunwind and will be I held sufiiciently to draw the wire-solder fromthe'spool. After the ring of wire-solder has dropped from thependentmandrel to the cap deposited on the hinged disk the next inter mittentmovement of the circular plate 6 will cause the disk on which the tincap and solheating the latter.

dcr ring are resting loosely-to move over the first of aseries ofburners 36, where the flame from the first burner will be projectedagainst thebottom surface of the disk, so as to begin As there are aseries of these burners 36, arran ed. at 'regularintervals a art, thedisks Will be heated during severa intermittent movements of the circu-.lar plate, and-[each burner will lay apart in heating the disk andsolder, so t at the latter will be heated sufliciently to fuse it andcause it to stick to the top surface of the ca adjacent the rim edgethereof, but leave the said rim edge of" the cap exposed and withoutsolder. After the disks have been passed beyond the burners thasolder onthe cap will set and get hard, and it is at this. point inrthe operationthat the series of perforations. 27 in the disk are useful in allowingthe air to circulate and by contact with the increased area of metalcause the disks tdiapidly cool suficiently to permit the caps, with thesolder adhering to the edge, 'to be discharged from the disks.

The operation of dischargin the soldered disks will now be described. 1s has heretofore been explained, the disks are each hinged to thecircular plate, and the object of thus hinging them is in orderthat'they may be raised and turned backward to dump 01' discharge thecaps. At the rear of the machine I provide an arm or rod 37, the lowerend of which is bolted to the frame and the upper end 38 of which curvesforwardly and then extends downwardly in aninclined direction,

as at 39, toward the circular plate 6. The lower end ofthis inclined rodhas a point 40, which projects close to the circular groove or channel22 at the inner rim and in the top surface of the revoluble plate 6. Itwill be understood that when the hinged disks 23 are. lying flat on therevoluble plate 6 their edges will project over the said circular grooveor channel 22, and by this means as each disk arrives at the point 40 ofthe inclined rod the said point will take beneath the saidoverprojecting edge of the disk, and when the plate 6 makes its nextintermittent movement the said overprojecting edge of the disk will rideup on the stationary pointed end of the rod and thereby begin to elevateand assume an inclined position above the holes in said plate. tentmovement of the plate will causethe disks to be elevated to slightlymore than a perpendicular position, with the result that the disk willthen fall back against a .stoparm 41'; which is also bolted to the frameand which projects above the plate, as clearly seen in Figs. 1 and 3. Infalling backward against the stop-arm the disks are jarred and the capswith the solder applied will fall out into a discharge-chute 42immediately beheath-the stop-arm. Upon the discharge of the caps thedisks are momentarily left stand ing in the rearwardly-inclinedpositioiyand it then becomes necessary to return them to the flathorizontal position over the holes in readiness to receive another capupon its arrival at the feed-chute. v

An inclined arm or bar 43 is attached at its upper end to the bracket31, and from said bracket the bar 43 inclines downwardly toward thedischarge-chute 42, and the lower end of said bar terminates beneath thestoparm 41, As the plate 6 makes another partial or intermittent turnthe rearwardly-inclined disk drops from the stop-arm '(almost to arearwardly-horizontal position) and falls on thelower end of saidinclined bar 43,. and the next partial movement will a ain elevate thedisk by dra ing it up the inc ined bar 43 until it again fa s forwardand is caught by a reversely-inclined bar 44. This reverselyinclined.bar 44 has its higher end attached to the inclined end 39' of the rod37, and the lowerend 45 of 'aaidtrod projects forwardly The nextintermit roc- IIO

toward the lower end of the feed-chute. After the disk has been thrownforward onto the bar 44 it will be gradually lowered as the plate 6revolves until it reaches the lower end of the bar, where it will againfall over the hole in the plate in time to receive another cap from thefeed-chute. This operation takes place with each of the disks, and therepeated operations of elevating, discharging, and returning the disksto normal horizontal position is carried on speedily and positively.

The finished product of this machine is a circular can-cap having a ringof solder secured only on its top surface adjacent the rim edge of thesaid cap and the said rim edge exposed and free of solder.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A machine for forming 'wiresolder rings and applying them to metalcaps, comprising a wire-solder supply means for shaping the wire-solderto the form of a ring; means for cutting the ring of solder from thesupply, and means lor placing the wire-solder ring upon the top surfaceof the cap.

2. A machine for forming wire solder rings and applying them tocan-caps, comprising a cap-holder; means for imparting to a strand ofwire-solder the shape of a ring; means for placing the wire-solder ringon the top surface of the cap; and means for applying heat to cause thesolder ring to fuse sufficiently to become attached to said top surfaceof the cap.

3. A machine for supplying wiresolder for attachment to metal capscomprising a wiresolder supply, a mandrel around which the solder iswrapped to shape it and means whereby one wrap of solder on the mandrelis out while another is being wound.

4:. A m achinefor forming and applying solder to metal caps comprising acap-holder, a wires:;lder supply; a mandrel around which the solder iswrapped to shape it; means for cutting the shaped solder in apredetermined length and depositing it on the cap in the holder, andmeans for heating the shaped solder after it is in position on the cap.

A machine for forming wire-s old er rings and applying them to can-caps,comprising a plurality of cap-holders; means for imparting to a strandof wire-solder the shapeof a ring; means for successively presenting thesaid cap-holders to the position where each cap will receive on itsupper surface a ring of solder, and means for fusing the solder ringssu'lliciently to attach them to said caps.

6. A machine for applying solder to metal caps, comprising a pluralityof cap-holders, a

wire-solder supply; means for cutting the wire-solder in predeterminedlengths, and means for presenting the cap-holders and caps successivelyto receive the holder as it is cut.

7. A machine for applyingsolder to metal caps comprising a plurality ofcap-holders, a wire-solder supply; means for depositing the wire-solderon the caps in the holders in predetermined lengths; means forpresenting the holders successively to receive the solder, and means forheating the lengths of solder after they have been deposited on thecaps.

8. A machine for applying solder to metal caps comprising a wire-soldersupply, a mandrel around which the solder is wrapped to shape it; aplurality cf cap-holders; means for presenting the cap-holders to themandrel successively; means for cutting the shaped solder and depositingit on the caps in the holders, and means for heating the solder after ithas been deposited on the caps.

9. A machine for applying solder to metal caps comprising a wire-soldersupply, a mandrel around which the solder is Wrapped to shape it aplurality of movable cap-holders; means for successively presenting theholders to the mandrel; means whereby as each holder is presented to themandrel the wiresolder will be out and deposited on the cap therein, andmeans for heating the cut solder after it has been deposited on the cap.

10. A machine for supplying Wire-solder rings for attachment to metalcaps comprising a wire-solder supply; a pendent mandrel around which thesolder is Wrapped in a plurality of coils; a cutter-blade attached tothe mandrel; and means for forcing one coil of wire against thecutter-blade while another coil is being wound on the mandrel, wherebyeach coil as soon as cut will drop from said mandrel.

11. A machine for supplying Wire-solder rings for attachment to metalcaps compris ing a wire-solder supply 'a pendent mandrel around whichthe solder is wrapped in a plurality of coils; stationary arms about theupper part of, the mandrel, and a cutter-blade attached to the mandrelbelow said arms, whereby the wire-solder winds on the mandrel beneathsaid armsand the coils of wiresold er will be pressed toward thecutter-blade.

12. A machine for supplying solder for attachment to metal capscomprisin a Wiresolder supply; a pendent mandrel around which the solderis Wrapped in a plurality of coils; a cutter-blade at one side of themandrel and revolving with the latter; and means for partly cutting onecoil in order to hold it on the mandrel before the coil next below iscompletely severed.

13. A machine for supplying solder for.at tachment to metal capscomprising a Wiresolder supply, a mandrel around which the solder isWrapped ina plurality of coils; a cutter-blade rigidly secured to andrevolving. with the mandrel; a stationary cam-surface atone side of themandrel and adjacent which the cutting end of the cutter-blade passeswhereby as the Wire-solder is wound tachment to metal caps comprising. awiresolder supply, a revoluble mandrel around which the solder iscoiled; a cutter-blade secured t0 the mandrel and extending in acrosswise direction with respect to the coils of solder; means wherebythe solder coils may be moved along the mandrel as the latter revolvesto efl'ect the cutting of one coil 'and to secure the remaining coils toprevent their unwinding.

'16. A machine for applying solder to metal caps comprising a carrier, aplurality of capholders on said carrier; means for-supplyingwire-solder; means adjacent the carrier for cutting the Wire-solder inpredetermined lengths to be delivered. successively on the caps in theholders, and means fol-moving the carrier to present the holders andcaps thereon in succession to receive the cut solder.

17. A machine for applying solder to metal caps comprising a carrier, aplurality of capho ders sustained by said carrier; means for supplyingire-solder; means adjacent the carrier for cutting the wire-solder inprede termined lengths to be delivered successively ,on the caps in theholders; means for n1ovin the carrier intermittently to present the hoders and caps thereon successively to re ceive the cut solder, and meansfor heating 7 the cut solder after it isin osition on thevcap.

In testimony whereof 1 in presence of two witnesses. FREDERK'K N.SCHULTZ.

. Witnesses:

JOHN W. Hnwns, G. FERDINAND Vosr.

afiix my signature

